MySql 从冒号中选择

Question

表：用户

| user_Id  | my_threads          |               
| 100      | 200:1, 201:2, 217:4 |
| 101      | 200:1, 215:3, 217:4 |

表：线程

| thread_id | author_id | title                     |
| 217       | 100       | This is title thread      |
| 200       | 101       | this is only test         |

当用户登录成功$userId=user_Id，显示该用户线程的标题？

select title 
from thread
where FIND_IN_SET(thread.thread_id,(select my_threads from user where user_id=100));

当 my_threads 没有像这样的冒号 200、217 时，上面的这个 sql 有效

Answer 1

试试这个：

将冒号替换为逗号

select title 
from thread
where FIND_IN_SET(thread.thread_id,
        (select replace(replace(my_threads,':',','),' ','') from user where user_id=100))

SQL fiddle demo